苏州混凝土水泥制品研究院有限公司

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发布时间:2020-01-06 00:00:00
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杂志简介

主办单位: 苏州混凝土水泥制品研究院
中国混凝土与水泥制品协会
  • 主编 : 李建华
  • 常务副主编 : 王春蓉
  • 刊期 : 月刊
  • 电话 : 0512-68285716
  • E-mail : sccpitg@126.com
  • 国内统一刊号(CN) : 32-1173/TU
  • 国际标准刊号(ISSN) : 1000-4637
  • 邮发代号 : 28-80
hunnitu 微信公众号
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混凝土研究

多元矿物掺合料对泡沫混凝土性能影响研究
多元矿物掺合料对泡沫混凝土性能影响研究
  • 刘召超
2021年第8期
摘要
引用本文
摘   要:为研究矿物掺合料对泡沫混凝土力学性能、导热系数、抗冻性的影响,以粉煤灰掺量10%的泡沫混凝土为基准,通过分别单掺硅灰和矿粉及复掺硅灰、矿粉研究了矿物掺合料对泡沫混凝土性能的改善作用。结果表明:当分别单掺硅灰和矿粉时,泡沫混凝土的抗压强度、抗折强度及抗冻性均得到一定提升,导热系数随之增大;当复掺硅灰和矿粉,且复掺比例为2∶1时,泡沫混凝土的强度和抗冻性最佳,导热系数最大。 Abstract: To study the influence of mineral admixtures on the mechanical properties, thermal conductivity, and frost resistance of foamed concrete, based on the foamed concrete with a fly ash content of 10%, by mixing silica fume and mineral powder alone and compounding silica fume and mineral powder respectively, the improvement effect of mineral admixture on the foamed concrete was studied. The results show that when silica fume and mineral powder are added separately, the compressive strength, flexural strength and frost resistance of foamed concrete are improved to a certain extent, and the thermal conductivity increases accordingly. When silica fume and mineral powder are added, the compressive strength, flexural strength, and frost resistance of foamed concrete are increased. When the mixing ratio of silica fume and slag powder is 2∶1, the strength and frost resistance of the foamed concrete are the best, and the thermal conductivity is the largest.
刘召超.多元矿物掺合料对泡沫混凝土性能影响研究[J].混凝土与水泥制品,2021(8):1-4. LIU Z C.Effect of Multi-mineral Admixtures on Properties of Foamed Concrete[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(8):1-4.
碳纳米管活性粉末混凝土力学性能试验研究
碳纳米管活性粉末混凝土力学性能试验研究
  • 刘桂凤1,朱 鼎1,陈正发1,张华娣1,李 岩2
2021年第8期
摘要
引用本文
摘   要:选择三种养护方式(标准养护、80 ℃热水养护、洒水养护)、设置5种碳纳米管掺量(0、0.05%、0.10%、0.15%、0.20%),研究了碳纳米管的分散性和掺量、养护方式对碳纳米管活性粉末混凝土力学性能的影响,并基于SEM测试结果对基体进行了微观分析。结果表明:经分散处理后的MWCNTs溶液的分散性和稳定性提高;相较于未分散处理的MWCNTs,MWCNTs分散液对活性粉末混凝土抗压、抗折强度的提高幅度更大;80 ℃热水养护下,当经分散处理后的MWCNTs掺量为0.10%时,MWCNTs活性粉末混凝土的抗压和抗折强度最大;标准养护和洒水养护下,当经分散处理后的MWCNTs掺量为0.15%时,MWCNTs活性粉末混凝土的抗压和抗折强度最大;SEM结果显示,胶凝材料二次水化生成了大量水化硅酸钙,减少了孔隙;碳纳米管能与基体紧密连接,阻止微裂缝的生成和扩展,起到了桥接和填充作用。 Abstract: Three kinds of curing methods(standard curing, 80 ℃ hot water curing and sprinkling curing) were selected, 5 kinds of carbon nanotube(MWCNTs) content(0, 0.05%, 0.10%, 0.15%, 0.20%)were set, the influence of the dispersibility and dosage of MWCNTs and curing methods on the mechanical properties of carbon nanotube reactive powder concrete was studied. The microstructure of matrix was characterized by SEM. The results show that the dispersion and stability of the MWCNTs solution after dispersion treatment are improved. Compared with the undispersed MWCNTs, the MWCNTs dispersion has a greater improvement in the compressive and flexural strength of reactive powder concrete. Under 80 ℃ hot water curing, when the content of dispersed MWCNTs is 0.10%, the compressive and flexural strength of MWCNTs reactive powder concrete reach the maximum. Under standard curing and sprinkling curtain curing, when the content of dispersed MWCNTs is 0.15%, the compressive and flexural strength of MWCNTs reactive powder concrete reach the maximum. SEM results show that the secondary hydration of the cementitious material produces a large amount of hydrated calcium silicate, which reduces porosity. MWCNTs can be closely connected with the matrix, preventing the formation and expansion of micro-cracks, and playing the role of bridging and filling.  
刘桂凤,朱鼎,陈正发,等.碳纳米管活性粉末混凝土力学性能试验研究[J].混凝土与水泥制品,2021(8):5-9. LIU G F,ZHU D,CHEN Z F,et al.Experimental Study on Mechanical Properties of Carbon Nanotube Reactive Powder Concrete[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(8):5-9.
膨胀剂和高吸水树脂对低水灰比GRC性能的影响
膨胀剂和高吸水树脂对低水灰比GRC性能的影响
  • 安雪玮,邹闻达,汪金能
2021年第8期
摘要
引用本文
摘   要:对比研究了不同掺量的高吸水树脂(SAP)与钙质膨胀剂(UEA)复合作用对低水灰比玻璃纤维增强水泥基材料(GRC)力学性能、收缩性能和抗裂性能的影响,并对抑制收缩机理进行了讨论。结果表明:预吸水的SAP释水具有内养护的效果,能够促进水泥水化;掺入0.2%的SAP能够提高水泥砂浆的力学性能,但是SAP含量进一步增加时,释水留下的孔隙会导致力学性能降低;SAP释放的水分能够补偿混凝土的内部湿度,从而降低毛细管张力,同时释放的水分能够提供给UEA进行膨胀反应,从而协同抑制水泥砂浆的收缩,细化裂缝,降低开裂指数,提高抗裂性能。 Abstract: The influence of super absorbent polymer(SAP) and calcium expansion agent (UEA) on mechanical properties, shrinkage properties and crack resistance of glass fiber reinforced cement(GRC) with low W/C was analyzed, and the mechanism of inhibiting shrinkage was also discussed. The results show that the pre-absorbed SAP release water has the effect of internal curing and can promote the hydration of cement. The addition of 0.2% SAP can improve the mechanical properties of cement mortar. However, when the SAP content increases continuously, the pores left by the release of water further will cause decrease in mechanical properties. The water released by SAP can compensate the internal humidity of the concrete, thereby reducing the capillary tension. On the other hand, the released water can be provided to UEA for expansion reaction, thereby synergistically inhibiting the shrinkage of cement mortar, thinning cracks, reducing the cracking index, and having a better cracking resistance.
安雪玮,邹闻达,汪金能.膨胀剂和高吸水树脂对低水灰比GRC性能的影响[J].混凝土与水泥制品,2021(8):10-13. AN X W,ZOU W D,WANG J N.Influence of Expansive Agent and Super Absorbent Polymer on the Performance of GRC with Low Water-cement Ratio[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(8):10-13.
黏度对HPMC透水混凝土性能及施工温度的影响
黏度对HPMC透水混凝土性能及施工温度的影响
  • 高梦秋1,苏 悦2,杨 航1
2021年第8期
摘要
引用本文
摘   要:研究了羟丙基甲基纤维素(HPMC)溶液浓度与黏度的关系和HPMC溶液黏度与其透水混凝土性能的关系,得出了满足力学性能及透水性能要求的HPMC透水混凝土施工温度条件。结果表明:HPMC溶液黏度随浓度增大而增加;HPMC透水混凝土的抗压强度随溶液黏度增加先增后减,在满足抗压强度要求的黏度区间内,其抗折强度及透水性均满足要求;在一定条件下,HPMC黏度随温度升高而减小,对具有较高黏度的HPMC透水混凝土,可通过控制其拌合物的出机温度以满足和易性要求。 Abstract: The relationship between the concentration and viscosity of HPMC, viscosity of HPMC solution permeability of concrete was studied. The temperature condition of HPMC permeable concrete construction that meet the requirements of mechanical performance and water permeability was obtained. The results show that the viscosity of HPMC solution increases with the increase of concentration. The compressive strength of HPMC permeable concrete increases first and then decreases with the increase of solution viscosity. Within the viscosity range that meets the requirements of compressive strength, its flexural strength and water permeability meet the requirements. Within the certain conditions, the HPMC viscosity decreases with the increase of temperature. For HPMC permeable concrete with higher viscosity, the exit temperature of the mixture can be controlled to ensure that the construction operation and workability are satisfied.
高梦秋,苏悦,杨航.黏度对HPMC透水混凝土性能及施工温度的影响[J].混凝土与水泥制品,2021(8):14-18. GAO M Q,SU Y,YANG H.The Effect of Viscosity on the Performance and Construction Temperature of HPMC Permeable Concrete[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(8):14-18.
基于硫酸盐侵蚀的混凝土干湿循环制度研究
基于硫酸盐侵蚀的混凝土干湿循环制度研究
  • 郭进军1,王 锟1,陈坤鹏2,杨 林1,万 聪1,李 昊1
2021年第8期
摘要
引用本文
摘   要:设计了四种干湿比(1∶1、3∶1、5∶1、7∶1)和两种干燥方式(烘箱干燥、自然干燥),通过相对抗压强度和相对动弹性模量的变化研究了干湿循环下硫酸盐侵蚀混凝土的力学性能劣化规律,并利用扫描电子显微镜、X射线衍射仪和压汞仪探究了微观结构的演变过程。结果表明:硫酸盐侵蚀混凝土的力学性能呈现先增加后降低的趋势;烘箱干燥和自然干燥下,混凝土劣化相对较严重的干湿比分别为3∶1和5∶1;混凝土孔隙总体积随龄期的延长不断降低,其中,有害孔(50 nm≤d≤200 nm)的减少是孔隙细化的最主要原因。 Abstract: Four dry-wet ratios (1∶1, 3∶1, 5∶1, 7∶1) and two drying methods(oven drying, natural drying)were designed. Base on the change rules of relative compressive strength and relative dynamic elasticity modulus, the degradation law of sulfate attacked concrete performance in alternating drying-wetting environments was studied, and the evolution of the microstructure was explored by scanning electron microscope, X-ray diffractometer and mercury porosimeter. The results show that the mechanical properties of sulfate attacked concrete show a trend of first increasing and then decreasing. Under oven-drying and air-drying, the dry-wet ratios for the relatively serious deterioration of concrete are 3∶1 and 5∶1 respectively. The total volume of concrete pores continues to decrease with erosion. The reduction of harmful pores(50 nm≤d≤200 nm) is the main reason for pore refinement.
郭进军,王锟,陈坤鹏,等.基于硫酸盐侵蚀的混凝土干湿循环制度研究[J].混凝土与水泥制品,2021(8):19-23,27. GUO J J,WANG K,CHEN K P,et al.Research on Dry-wet Cycle System of Concrete Under Sulfate Attack[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(8):19-23,27.
MgO膨胀剂在大体积混凝土结构中的抗裂效果研究
MgO膨胀剂在大体积混凝土结构中的抗裂效果研究
  • 曹丰泽1,高玉亭2,张慧杰2,阎培渝1
2021年第8期
摘要
引用本文
摘   要:研究了掺加MgO膨胀剂配制的补偿收缩混凝土在具有高抗裂性要求的大体积混凝土侧墙施工过程中的体积变形和温度变化情况。现场试验结果表明:掺加6.2%M型MgO膨胀剂的C35补偿收缩混凝土在满足强度发展要求的前提下,可以在大体积混凝土结构内部温度下降段产生一定的膨胀,并长期保持稳定,补偿混凝土结构的温度收缩,从而使结构内部产生少量的预压应力,降低混凝土结构收缩裂缝的出现几率。 Abstract: The temperature and volume variation of shrinkage-compensating concrete mixed with MgO expansive agent was measured during the construction of a mass concrete wall with high anti-cracking requirement. The results show that MgO expansive agent compensates the shrinkage of mass concrete effectively during the descending period of temperature. The ultimate volumetric expansive rate of concrete is positive, forming a compressive pre-stress to resist cracking of concrete effectively.
曹丰泽,高玉亭,张慧杰,等.MgO膨胀剂在大体积混凝土结构中的抗裂效果研究[J].混凝土与水泥制品,2021(8):24-27. CAO F Z,GAO Y T,ZHANG H J,et al.Study on the Anti-cracking Efficiency of MgO Expansive Agent on Shrinkage-compensating Concrete in Mass Concrete Wall Structure[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(8):24-27.
无碱液体速凝剂的制备及其性能研究
无碱液体速凝剂的制备及其性能研究
  • 周红燕,张 耀
2021年第8期
摘要
引用本文
摘   要:以硫酸铝和三乙醇胺作为速凝剂的主体组分,掺入甘油 、氟化钠、改性乙二醇、草酸、无机酸5种调节组分配制了无碱速凝剂,确定了硫酸铝、三乙醇胺、草酸、甘油、改性乙二醇、无机酸的合理掺量。结果表明:采用制备的速凝剂可使试件的初凝时间小于5 min,终凝时间小于12 min,1 d抗压强度达到7.5 MPa,7 d抗压强度达到34.2 MPa,稳定性满足现行标准的要求。 Abstract: A alkali-free accelerator was prepared by using aluminum sulfate and triethanolamine as the main components and adding glycerin, sodium fluoride, modified ethylene glycol, oxalic acid and inorganic acid. The reasonable dosage of aluminum sulfate, triethanolamine, oxalic acid, glycerin, modified ethylene glycol and inorganic acid was determined. The results show that the specimen with prepared accelerator has an initial setting time of less than 5 min and a final setting time of less than 12 min. The 1 d compressive strength of the specimen reaches 7.5 MPa, and the 7 d compressive strength reaches 34.2 MPa, and its stability meets the requirements of current standards.
周红燕,张耀.无碱液体速凝剂的制备及其性能研究[J].混凝土与水泥制品,2021(8):28-31,36. ZHOU H Y,ZHANG Y.Study on the Preparation and Performance of Alkali-free Liquid Accelerator[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(8):28-31,36.
人工鱼礁用混凝土研究与应用现状
人工鱼礁用混凝土研究与应用现状
  • 冯业城1,李思琪1,孙 勇1,张 鹏2,杨进波1
2021年第8期
摘要
引用本文
摘   要:综述了人工鱼礁用混凝土的研究与应用现状,介绍了人工鱼礁用混凝土目前所采用的主要原材料,分析了人工鱼礁用混凝土的力学性能、抗氯离子渗透性能、抗硫酸盐侵蚀性能、生物附着性能、环境安全性能、抗生物硫酸腐蚀性能和工作性及其测试方法,并对人工鱼礁用混凝土的发展方向提出了建议。 Abstract:  The research and application of concrete for artificial reef are reviewed. The main raw materials of artificial reef concrete are introduced. The mechanical properties, chloride penetration resistance, sulfate erosion resistance, biological growth adhesion, environmental safety, biological sulfuric acid corrosion resistance and working performance of concrete for artificial reef and their test methods are analyzed. According to the present situation, some suggestions for the future development of artificial reef concrete materials are put forward.
冯业城,李思琪,孙勇,等.人工鱼礁用混凝土研究与应用现状[J].混凝土与水泥制品,2021(8):32-36. FENG Y C,LI S Q,SUN Y,et al.Research and Application Status of Concrete for Artificial Reef[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(8):32-36.

水泥混凝土制品

立体脉动式预制混凝土板柔性生产线的研发与应用
立体脉动式预制混凝土板柔性生产线的研发与应用
  • 刘加华1,纪先锋2
2021年第8期
摘要
引用本文
摘   要:针对目前国内预制混凝土板自动化流水生产线存在的问题(主辅工位数量不匹配、设备瓶颈多、养护效率低、设备利用率低、难以实现柔性生产等),研发了脉动式预制混凝土板柔性生产线。实际生产表明,采用该生产线,预制混凝土板的生产效率比传统流水生产线提高了3倍以上。同时,该生产线具有生产成本低、土地利用率高、设备坪效比高等优势,可进一步推广应用。 Abstract: Aiming at the problems existing in the automatic flow production line for precast concrete slab(the number mismatch between main operation stations and auxiliary stations, many equipment bottlenecks, low standard maintenance efficiency, low utilization rate of equipment, and difficulty in flexible production), a three-dimensional pulsating flexible production line for precast concrete slab was developed. The actual production shows that the production efficiency of precast concrete slab with the flexiable production line can be increased by more than 3 times compared with that of the traditional production line. At the same time, it has the advantages of low production cost, high land utilization rate and high equipment ground effect ratio, which can be further promoted and applied.
刘加华,纪先锋.立体脉动式预制混凝土板柔性生产线的研发与应用[J].混凝土与水泥制品,2021(8):37-40. LIU J H,JI X F.Development and Application of Flexible Production Line for Three-dimensional Pulsating Precast Concrete Slab[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(8):37-40.
石粉对预制沉管机制砂混凝土性能的影响研究
石粉对预制沉管机制砂混凝土性能的影响研究
  • 徐 延,刘 行,李 超,胡文刚
2021年第8期
摘要
引用本文
摘   要:研究了石粉含量对预制沉管机制砂混凝土工作性、力学性能等的影响。结果表明:石粉含量过大会导致混凝土拌和物含气量下降、黏聚性提高、流动性降低;石粉在混凝土中主要起填充作用,当石粉含量在10%左右时,混凝土的力学性能和抗氯离子渗透性较好;石粉含量过大会导致混凝土塑性开裂敏感性提高,但在合适养护条件下,机制砂可提高混凝土的抗裂性能;混凝土的干燥收缩率随石粉含量和龄期增加而上升,石粉含量为10%时,混凝土的60 d干燥收缩率为311×10-6;石粉对引气高性能混凝土抗冻性的影响不显著,但随石粉含量增加而下降。 Abstract: The effect of stone powder on the workability and mechanical properties of precast immersed tube manufactured-sand concrete was studied. The results show that stone powder reduces the entrained air content of concrete, increases cohesiveness and reduces fluidity. Stone powder primarily plays a role of micro-aggregate filling. When the stone powder content is about 10%, the mechanical performance and the resistance to chloride ion diffusion are the best. Stone powder enhances the plastic cracking sensitivity of concrete, but the manufactured sand is beneficial to advance the crack resistance of concrete under good curing. The drying shrinkage rate of concrete rises with stone powder content increasing. When the stone powder content is 10%, the 60 d drying shrinkage rate is 311×10-6. The influence of stone powder on the frost resistance of air-entrained high performance concrete is not significant, but it appears to decrease with the increase of stone powder content.
徐延,刘行,李超,等.石粉对预制沉管机制砂混凝土性能的影响研究[J].混凝土与水泥制品,2021(8):41-44. XU Y,LIU H,LI C,et al.Influence of Stone Powder on the Performance of Sand Concrete for Precast Immersed Tube Manufactured[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(8):41-44.
基于装配式结构施工便捷的预应力叠合梁应用研究
基于装配式结构施工便捷的预应力叠合梁应用研究
  • 王 杰1,2,张 庆1,2,吴光伟1,2,周冰凌1,2
2021年第8期
摘要
引用本文
摘   要: 提出了一种构造简单的基于施工需求设计的预应力叠合梁,借助常见的混凝土框架案例,构筑了依托预应力叠合梁、板组成的施工免支撑结构方案,介绍了该种预应力叠合梁的计算控制要点,可为预应力叠合梁在装配式框架结构中的应用提供参考。 Abstract: A prestressed composite beam designed based on construction requirements with a simple structure is put forward. With the help of common concrete frame cases, the construction free support structure system based on prestressed composite beam and slab is constructed, and the calculation control points of the prestressed composite beam are introduced, which can provide a reference for the application of prestressed composite beams in prefabricated frame structures.
王杰,张庆,吴光伟,等.基于装配式结构施工便捷的预应力叠合梁应用研究[J].混凝土与水泥制品,2021(8):45-48,63. WANG J,ZHANG Q,WU G W,et al.Application of Prestressed Composite Beam Based on Convenient Construction of Prefabricated Structures[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(8):45-48,63.

纤维水泥及制品

PVA纤维分散性及纤维混凝土弯曲韧性试验研究
PVA纤维分散性及纤维混凝土弯曲韧性试验研究
  • 邓宗才1,赵连志2,丁建明1,贺少锋1
2021年第8期
摘要
引用本文
摘   要:提出了一种新型纤维混凝土拌和工序和评价纤维分散性的简易方法,并研究了不同掺量PVA纤维对混凝土力学性能和弯曲韧性的影响。结果表明:新型拌合工序可以有效降低对纤维的损伤,有助于纤维在混凝土中均匀分散;当纤维掺量为4.5 kg/m3和7.5 kg/m3时,纤维分散性较好,而当纤维掺量为10.5 kg/m3时,纤维分散性欠佳;随着PVA纤维掺量的增加,混凝土的抗压、抗拉强度先增后减,弯拉强度和韧性耗能能力逐渐增强。 Abstract: A new mixing process of the fiber-reinforced concrete and a simple method for evaluating fiber dispersion were put forward, and the effects of different contents of PVA fiber on the mechanical properties and flexural toughness of concrete were studied. The results show that the new mixing method can effectively reduce the damage to the fiber and help the fiber disperse evenly in the concrete. When the fiber content is 4.5 kg/m3 and 7.5 kg/m3, the fiber dispersion is better, but the fiber dispersion is unsatisfactory when the fiber content is 10.5 kg/m3. With the increase of PVA fiber content, the compressive strength and tensile strength increase first and then decrease, and the flexural tensile strength and the toughness energy dissipation capacity gradually increase.
邓宗才,赵连志,丁建明,等.PVA纤维分散性及纤维混凝土弯曲韧性试验研究[J].混凝土与水泥制品,2021(8):49-53. DENG Z C,ZHAO L Z,DING J M,et al.Experimental Study on PVA Fiber Dispersion and Bending Toughness of Fiber Reinforced Concrete[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(8):49-53.
复掺纤维和玻化微珠对湿热环境下混凝土性能的影响
复掺纤维和玻化微珠对湿热环境下混凝土性能的影响
  • 吕家栋1,赵立财1,2
2021年第8期
摘要
引用本文
摘   要:研究了复掺钢纤维、聚丙烯纤维和玻化微珠对混凝土抗压性能的影响,通过微观定量方法描述了混凝土孔隙结构与抗压性能之间的关系,结合声发射技术分析了湿热环境下混凝土的压缩破坏特征。结果表明:复掺钢纤维、聚丙烯纤维和玻化微珠混凝土在各级温度下的抗压强度均最高,且随温度上升的强度损失率最低;复掺钢纤维、聚丙烯纤维和玻化微珠混凝土的孔隙率和孔隙分形维数与抗压强度有良好的非线性关系;复掺钢纤维、聚丙烯纤维和玻化微珠可使混凝土的破坏形式从以张拉破坏为主转变为以剪切破坏为主。 Abstract: The effects of steel fiber, polypropylene fiber and vitrified beads on the compressive performance of concrete were studied, and the relationship between pore structure and compressive performance of concrete was described by microscopic quantitative method, and the compression failure characteristics of concrete under hot-humid environment were studied. The results show that the compressive strength of the concrete mixed with steel fiber, polypropylene fiber and vitrified beads is the highest at all temperatures, and the strength loss rate with the increase of temperature is the lowest. The porosity and fractal dimension of the concrete mixed with steel fiber, polypropylene fiber and vitrified beads have good nonlinear relationship with compressive strength. The addition of steel fiber, polypropylene fiber and vitrified beads can change the concrete failure mode from tensile failure to shear failure.
吕家栋,赵立财.复掺纤维和玻化微珠对湿热环境下混凝土性能的影响[J].混凝土与水泥制品,2021(8):54-58. LYU J D,ZHAO L C.Effects of Composite Fiber and Vitrified Beads on the Performance of Concrete in Hot-humid Environment[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(8):54-58.
基于响应面法的玄武岩纤维再生混凝土力学性能分析
基于响应面法的玄武岩纤维再生混凝土力学性能分析
  • 陈兴祥,谭 燕,童 瑶,张维维
2021年第8期
摘要
引用本文
摘   要:基于Design Expert软件,采用响应面法(RSM)分析了玄武岩纤维(BF)长度和体积掺量对再生粗骨料替代率为20%的玄武岩纤维再生混凝土(BFRAC)力学性能的影响。结果表明:BF体积掺量对BFRAC力学性能的影响程度大于BF长度;对于抗折强度、劈裂抗拉强度和抗压强度,对应的BF最佳掺量分别为0.2%、0.1% 和0.2%。 Abstract: Based on Design Expert software, the response surface method(RSM) was used to analyze the influence of basalt fiber (BF) length and volume content on the mechanical properties of basalt fiber recycled concrete(BFRAC) with 20% replacement rate of recycled coarse aggregate. The results show that BF volume content has a greater influence on the mechanical properties of BFRAC than that of BF length. For the flexural strength, split tensile strength and compressive strength of BFRAC, the corresponding optimal BF content is 0.2%, 0.1% and 0.2%, respectively.
陈兴祥,谭燕,童瑶,等.基于响应面法的玄武岩纤维再生混凝土力学性能分析[J].混凝土与水泥制品,2021(8):59-63. CHEN X X,TAN Y,TONG Y,et al.Analysis of Mechanical Properties of Basalt Fiber Recycled Concrete Based on Response Surface Method[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(8):59-63.

房建材料及制品

新型EPS模块浇筑墙体受压性能试验研究
新型EPS模块浇筑墙体受压性能试验研究
  • 宋珊珊,李倩茹,徐 晓,郝文秀,于万里
2021年第8期
摘要
引用本文
摘   要:通过对4片新型EPS模块浇筑墙体进行轴心和偏心受压试验,研究了试件的破坏形态、极限承载力和变形规律。在试验基础上,利用ABAQUS软件建立了新型EPS模块浇筑墙体有限元模型,并对试件的极限承载力进行了对比分析。结果表明:新型EPS模块内存在连接桥,墙体的破坏首先出现在连接桥处,最终破坏形式为受压区混凝土破坏;随着偏心距逐渐增大,墙体的极限承载力明显降低,应变与普通混凝土墙体的变化相似;有限元分析结果与试验结果吻合良好,可为工程设计提供分析方法和理论依据。 Abstract: Four new EPS module cast-in-place walls were tested under axial compression and eccentric compression,  and the failure mode, ultimate bearing capacity and deformation law of the specimens were studied. On the basis of the test, the finite element model of new EPS cast-in-place wall was established by using ABAQUS software, and the ultimate bearing capacity of the specimen was compared and analyzed. The results show that there is a connecting bridge in the new EPS module, and the wall failure first appears at the connecting bridge, and the final failure mode is concrete failure in the compression zone. With the increase of the eccentricity, the ultimate bearing capacity of the wall decreases obviously, and the change of the concrete strain is similar to that of the ordinary concrete wall. The results of finite element analysis are in good agreement with the test results, which can provide analysis method and theoretical basis for engineering design.
宋珊珊,李倩茹,徐晓,等.新型EPS模块浇筑墙体受压性能试验研究[J].混凝土与水泥制品,2021(8):64-68. SONG S S,LI Q R,XU X,et al.Experimental Study on Compression Performance of New EPS Module Walls[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(8):64-68.
全FRP筋增强混凝土梁抗剪性能综述
全FRP筋增强混凝土梁抗剪性能综述
  • 吕家美1,邸 博2,何立杰2,黄柳超2
2021年第8期
摘要
引用本文
摘   要:钢筋锈蚀导致混凝土结构性能下降,使用寿命缩短。纤维增强复合(FRP)筋具有高抗拉强度和优异的耐腐蚀性能,在部分结构中可代替钢筋,以提升混凝土结构的耐久性。将FRP筋应用于混凝土结构中是未来发展的重要方向,但目前关于其抗剪性能及抗剪机理尚未阐述清楚。本文对国内外关于FRP筋混凝土梁的抗剪性能研究进行了总结与分析。 Abstract: The corrosion of steel bar leads to the deterioration of the performance and the shortening of the service life of concrete structures. Fiber reinforced polymer(FRP) bars have high tensile strength and excellent corrosion resistance, and can replace steel bars in some structures to improve the durability of concrete structures. The application of FRP bars in concrete structures is an important development direction in the future. However, the shear behavior and shear mechanism of FRP reinforced concrete beams have not been explained clearly. Therefore, the research on shear behavior of FRP reinforced concrete beams at home and abroad is summarized and analyzed.
吕家美,邸博,何立杰,等.全FRP筋增强混凝土梁抗剪性能综述[J].混凝土与水泥制品,2021(8):69-73. LYU J M,DI B,HE L J,et al.Review on Shear Behavior of Concrete Beams Strengthened with FRP Bars and Stirrups[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(8):69-73.
基于LS-DYNA的钢筋混凝土梁落锤冲击响应分析
基于LS-DYNA的钢筋混凝土梁落锤冲击响应分析
  • 廖俊智,何 勇
2021年第8期
摘要
引用本文
摘   要:基于LS-DYNA显示动力分析程序,对3种不同配筋梁的冲击试验进行了数值模拟,通过参数分析探究了不同落锤高度下系统总能和各部件能量在整个冲击过程中的变化规律以及不同时间下剪应力沿梁长的分布情况。结果表明:随着落锤高度增加,落锤动能与梁体内能交换会出现滞后现象,落锤高度对梁体内各部件的耗能比例没有显著影响,冲击过程中惯性效应不明显;通过分析梁体内的剪应力分布情况,揭示了梁体在冲击过程中剪应力的传播规律和落锤高度对梁体抗剪性能的影响。 Abstract: The impact tests of three different reinforced beams were simulated based on the LS-DYNA explicit dynamic analysis program, and the change law of the total energy of the system and the energy of each component during the entire impact process under different drop weight heights and the distribution of shear stress along the beam length at different times were studied through parameter analysis. The results show that with the increase of the drop weight height, the kinetic energy of the falling weight and the energy in the beam body show a hysteresis phenomenon, and the drop weight height has no significant effect on the energy consumption ratio of various components in the beam body, and the inertial effect is not obvious during the impact process. The effects of the shear stress propagation law and the drop weight height on the shear resistance of the beam during the impact process are revealed by analyzing the distribution of shear stress.
廖俊智,何勇.基于LS-DYNA的钢筋混凝土梁落锤冲击响应分析全FRP筋增强混凝土梁抗剪性能综述[J].混凝土与水泥制品,2021(8):74-78. LIAO J Z,HE Y.Analysis of Impact Response of Reinforced Concrete Beams Based on LS-DYNA[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(8):74-78.
耳板式空腹桁架免支撑叠合板抗弯性能试验研究
耳板式空腹桁架免支撑叠合板抗弯性能试验研究
  • 张 旭1,陈 强1,庞祖杰2,孔 潇1,梁 艺2,王少杰1,胡兆文2
2021年第8期
摘要
引用本文
摘   要:通过标准砝码重物加载方法,研究了耳板式空腹桁架免支撑叠合板未浇筑后浇混凝土层、浇筑后浇混凝土层之后且上部钢管未拆除和拆除上部钢管三个施工受力阶段的抗弯性能,明晰了叠合板在各施工受力阶段的工作机制与设计计算方法。结果表明:耳板式空腹桁架免支撑叠合板在施工受力各阶段均具有良好的抵抗开裂与变形的能力,上部钢管、后浇混凝土层均可显著提高混凝土叠合底板的抗弯刚度。研究成果可为减少或免除普通混凝土叠合底板竖向支撑的使用,提高其抗裂性能提供有效路径。 Abstract: Through the loading method of standard weights, the flexural performance of the ear plate vierendeel truss composite slab without support in three construction stress stages of the post-cast concrete layer without pouring, the post-cast concrete layer after pouring and the upper steel tube without removing and the upper steel tube is removed were studied, and the working mechanism and design calculation method of the composite slab in each construction stress stage were clarified. The results show that the ear plate vierendeel truss composite slabs without support have good resistance to cracking and deformation at all construction stages, both the upper steel tube and post-cast concrete layer can significantly improve the flexural stiffness of concrete composite slabs. The research results can provide one of the effective ways for reducing or eliminating the use of vertical bracing of common concrete composite slab and improve its crack resistance.
张旭,陈强,庞祖杰,等.耳板式空腹桁架免支撑叠合板抗弯性能试验研究[J].混凝土与水泥制品,2021(8):79-82,95. ZHANG X,CHEN Q,PANG Z J,et al.Experimental Study on Flexural Performance of Ear Plate Vierendeel Truss Composite Slab Without Support[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(8):79-82,95.

检测及试验方法研究

一种无约束混凝土早龄期变形性能试验装置的研制
一种无约束混凝土早龄期变形性能试验装置的研制
  • 张仁瑜,王景贤,徐教宇,戈 兵,黄选明,王淑丽
2021年第7期
摘要
引用本文
摘 要:为解决目前混凝土早龄期变形试验方法存在的缺陷(试模及润滑油脂对混凝土收缩变形的约束、无法准确测得混凝土初凝前的变形),采用重液悬浮混凝土试件的方法来消除试模对试件的变形约束,研发了一种能准确测量混凝土早龄期变形的试验装置。结果表明:通过该试验装置测得的数据具有一定的准确性。 Abstract: In order to overcome the defects of existing test methods(mould and lubricating oil restrict shrinkage of concrete, and cannot accurately measure the deformation before the concrete initial setting), a new testing apparatus for early-age concrete unconstrained deformation was developed for using suspension heavy-liquid  in eliminating the restriction of mould. The results show that the data by testing apparatus has certain accuracy.
张仁瑜,王景贤,徐教宇,等.一种无约束混凝土早龄期变形性能试验装置的研制[J].混凝土与水泥制品,2021(7):84-87. ZHANG R Y,WANG J X,XU J Y,et al.Development of Testing Apparatus for Early-age Concrete Unconstrained Deformation[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(7):84-87.

施工技术研究

现役钢-UHPC桥面铺装修复技术研究
现役钢-UHPC桥面铺装修复技术研究
  • 吕帅灵1,商涛平2,王洪新1,2,宋卿卿2
2021年第7期
摘要
引用本文
摘   要:为了解决正交异性钢桥面的疲劳破坏病害,提出了一种基于免蒸养超高性能混凝土(UHPC)的钢桥面组合结构,结合实际工程给出了栓钉布置和钢筋间距的优化方案,总结了适用于钢桥面铺装的UHPC材料性能指标;对于大面积摊铺问题,设计了UHPC专用铺装施工设备,并进行了工艺性试验;通过有限元模拟分析了润扬大桥不同铺装体系下的变形情况,并与实桥监测数据进行了对比。结果表明:免蒸养UHPC结合完善的养护工艺能够抑制早期收缩裂缝的产生与发展;UHPC铺装相较于原环氧沥青混凝土铺装,钢桥面板的最大拉应变下降了53.3%,最大肋间相对挠度下降了42%;UHPC铺装能大幅提高桥面系的刚度,降低正交异性钢桥面板和铺装层的疲劳开裂风险。 Abstract: In order to solve the fatigue damage of orthotropic steel bridge deck, a composite structure of steel bridge deck based on non-steam curing ultra-high performance concrete (UHPC) was proposed. According to the supporting project, the optimization scheme of stud arrangement and reinforcement spacing was proposed, and the performance indexes of UHPC material suitable for steel bridge deck pavement were summarized. For the large-area paving problem, the special paving construction equipment for UHPC was designed and the process was carried out. The deformation of Runyang Bridge under different pavement systems was analyzed by finite element method, and compared with the monitoring data of real bridge. The results show that non-steam curing UHPC combined with perfect curing technology can control the generation and development of early shrinkage cracks. Compared with the original epoxy asphalt concrete pavement, the maximum tensile strain of steel deck is reduced by 53.3%, and the maximum relative deflection between ribs is reduced by 42%. UHPC pavement system can greatly improve the stiffness of bridge deck system, and reduce the risk of fatigue cracking of orthotropic steel deck and pavement insurance.
吕帅灵,商涛平,王洪新,等.现役钢-UHPC桥面铺装修复技术研究[J].混凝土与水泥制品,2021(7):88-92. LYU S L,SHANG T P,WANG H X,et al.Research on Repair Technology of Existing Steel-UHPC Composite Bridge Deck[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(7):88-92.

节能与环保

碱激发磷石膏复合胶凝材料力学性能研究
碱激发磷石膏复合胶凝材料力学性能研究
  • 麻鹏飞,杨 文,程宝军,亢泽千,康升荣
2021年第8期
摘要
引用本文
麻鹏飞,杨文,程宝军,亢泽千,康升荣.碱激发磷石膏复合胶凝材料力学性能研究[J].混凝土与水泥制品,2021(8):83-87. MA P F,YANG W,CHENG B J,et al.Study on Mechanical Properties of Alkali Activated Phosphogypsum Composite Cementitious Materials[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(8):83-87.
砖粉-石灰石粉混凝土的制备及性能研究
砖粉-石灰石粉混凝土的制备及性能研究
  • 明 阳1,2,3,4,李 玲1,2,3,4,李 青1,2,3,4,胡 成1,2,3,4,陈 平1,2,3,4,王 磊1,2,3,4
2021年第8期
摘要
引用本文
摘   要:通过正交试验研究了砖粉掺量、石灰石粉掺量、水胶比、砂率对混凝土工作性、力学性能和氯离子渗透性的影响,并确定了最优配合比。结果表明:采用25%的砖粉和10%的石灰石粉等质量替代35%的水泥,可以配制出性能优良的C35砖粉-石灰石粉混凝土,且与基准混凝土相比,其体积稳定性和氯离子渗透性得到明显改善。 Abstract: By using the orthogonal test, the influence of brick powder content, limestone powder content, water-binder ratio and sand ratio on the fluidity, mechanical properties and chloride ion permeability of the concrete with brick power and limestone powder were studied, and the optimum mix proportion was determined. The results show that C35 brick-limestone powder concrete with excellent performance can be prepared by using 25% brick powder and 10% limestone powder instead of 35% cement, and compared with the reference concrete, its volume stability and chloride ion permeability  are improved obviously.
明阳,李玲,李青,等.砖粉-石灰石粉混凝土的制备及性能研究[J].混凝土与水泥制品,2021(8):88-91. MING Y,LI L,LI Q,et al.Study on the Preparation and Performance of Concrete with Brick Powder and Limestone Powder[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(8):88-91.
浅谈绿色环保型预拌混凝土工厂的建设
浅谈绿色环保型预拌混凝土工厂的建设
  • 陈小和
2021年第8期
摘要
引用本文
摘   要:以公司的预拌混凝土工厂绿色转型升级项目为例,结合预拌混凝土绿色生产及管理的相关规范、规章要求,分别从项目的总体规划设计、主要工艺方案设计及设备选型、环境保护设施的设计建设及环保控制的具体措施等方面,介绍了预拌混凝土工厂向绿色、环保产业化转型升级的主要措施和实践。 Abstract: Taking the green transformation and upgrading projects of some ready mixed concrete plants of the company as an example, combined with the relevant specifications and regulations of green production and management of ready mixed concrete, the main measures and practices for the green transformation and upgrading of ready mixed concrete plants from the aspects of overall planning and design of the project, main process scheme design and equipment selection, design and construction of environmental protection facilities and specific measures of environmental protection control are introduced.
陈小和.浅谈绿色环保型预拌混凝土工厂的建设[J].混凝土与水泥制品,2021(8):92-95. CHEN X H.Discussion on the Construction of Green Environmental Ready Mixed Concrete Plants[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(8):92-95.

书评

矸石电厂粉煤灰的活化及应用技术 ——评《矸石电厂粉煤灰的活化及应用》
矸石电厂粉煤灰的活化及应用技术 ——评《矸石电厂粉煤灰的活化及应用》
  • 冯月娥
2021年第4期
摘要
引用本文
我国混凝土工程建设飞速发展,水泥用量与日俱增。而生产水泥需要消耗大量能源,这与国家的绿色环保政策背道而驰。矸石电厂用的煤矸石燃烧后灰分较高,粉煤灰的产出量是燃煤电厂的2倍左右,产出的粉煤灰含碳量高,理化特性与燃煤电厂粉煤灰差别较大,且造成了严重的环境污染和土地资源浪费。矸石电厂粉煤灰的循环利用已逐渐引起了学术界的关注,成为了研究热点。陈杰编著的《矸石电厂粉煤灰的活化及应用》一书通过对矸石电厂粉煤灰的形貌特征、化学成分、矿物组成等进行分析,采用化学、物理和物理化学活化技术对粉煤灰-水泥胶砂体系进行激活,得出了合理的活化方案;此外,以矸石电厂粉煤灰取代水泥制造粉煤灰基膏体充填材料,实现废物循环利用。笔者通过学习,认为该书具有较强的实用性,对于实现循环经济具有一定的指导意义,现简要总结重点内容。
冯月娥.矸石电厂粉煤灰的活化及应用技术——评《矸石电厂粉煤灰的活化及应用》[J].混凝土与水泥制品,2021(4):103.

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珊瑚碎屑混凝土的强度特性及破坏形态分析
珊瑚碎屑混凝土的强度特性及破坏形态分析
  • 王 磊1,2,范 蕾1,2
2015年第1期
摘要
引用本文
摘   要:针对目前对珊瑚碎屑混凝土的力学机理尚不清晰这一问题,对不同龄期和水灰比的珊瑚混凝土试块进行了试验研究。试验结果表明,珊瑚混凝土具有早强、快硬的特点;同时,当水灰比减小到一定程度后,单纯减小水灰比并不能明显提高珊瑚混凝土的抗压强度。本文从材料特性、界面特性以及龄期和水灰比等方面着手,对珊瑚混凝土的强度特性作了详细分析,并介绍了珊瑚混凝土的破坏形态,从而可为珊瑚碎屑应用于海岛混凝土工程提供一定的参考依据。 Abstract: Currently, the mechanical mechanism of coral debris concrete is not well understood, so the research on coral concrete test block in different age and water cement ratio is carried out. The test results show that coral concrete has the characteristics of fast strengthening and hardening, and when the water cement ratio decreases to a certain extent, simply reducing the water cement ratio could not result in obvious additions of compressive strength of coral concrete. From the aspects of material properties, interface properties,age and water cement ratio, the strength characteristics of the coral concrete are analyzed in detail, and the failure pattern is introduced, which can provide reference for application of coral debris in island concrete engineering.
王磊,范蕾. 珊瑚碎屑混凝土的强度特性及破坏形态分析[J].混凝土与水泥制品,2015(1):1-4. WANG L,FAN L.Strength Characteristic and Failure Pattern Analysis on Coral Debris Concrete[J].CHINA CONCRETE AND CEMENT PRODUCTS,2015(1):1-4.
装配式结构用高强套筒灌浆料性能试验研究
装配式结构用高强套筒灌浆料性能试验研究
  • 汪秀石,杨智良,吴照学
2015年第2期
摘要
引用本文
摘   要:研究了装配式结构用高强套筒灌浆料的性能,通过试配并进行了流动度、强度和膨胀性试验,优选出了优化配合比。同时基于优化配合比进行了水胶比、减水剂掺量和膨胀剂掺量对高强套筒灌浆料性能影响的研究。试验结果表明,随着水胶比(W/B)增加,流动度逐渐增大,但强度随W/B增加呈现明显降低趋势;减水剂可有效改善流动度,而当掺量过多时对强度有一定的影响;膨胀率随膨胀剂掺量增加呈现增长趋势,但当掺量小于8.0%时,膨胀效果较差,掺量大于12.0%时,对流动度和强度产生不利影响。 Abstract: The properties of high-strong cementitious grout for prefabricated concrete structure are studied, and the optimum mix proportion is elected by the tests of fluidity, strength and expansibility. The roles of W/B and the content of superplasticizer or expanders in high-strong cementitious grout for coupler are researched respectively based on the optimum mix proportion. The test results show that the fluidity of the grout increases with the increasing of W/B, but its strength has significantly decreasing trend; the fluidity of the grout can be improved effectively by superplasticizer, but its strength will decrease if superplasticizer content is excessive; expansion rate of the grout increases with the increasing of expanders agent content, but the expansibility is poor when the content is less than 8.0%, and it has an adversely affect on the liquidity and strength of the grout when the content is greater than 12.0%.
汪秀石,杨智良,吴照学.装配式结构用高强套筒灌浆料性能试验研究[J].混凝土与水泥制品,,2015(2):65-68. WANG X S,YANG Z L,WU Z X.Experimental Research on Performance of High-strong Cementitious Grouting for Prefabricated Concrete Structure[J].CHINA CONCRETE AND CEMENT PRODUCTS,2015(2):65-68.
再生粗骨料强化处理工艺对再生混凝土性能的影响
再生粗骨料强化处理工艺对再生混凝土性能的影响
  • 郭远新,李秋义,孔 哲,岳公冰,韩 帅
2015年第6期
摘要
引用本文
摘   要:分别采用物理强化、化学强化和物理-化学复合强化三种不同的强化方式对简单破碎再生粗骨料进行强化处理,并采用100%取代天然碎石制备再生粗骨料混凝土,研究了不同强化处理后的再生粗骨料对混凝土工作性能、力学性能、抗渗透性能和抗碳化性能的影响。结果表明,经过强化处理的再生粗骨料混凝土的各项性能均有不同程度的提高,其中经二次物理强化处理后的再生粗骨料混凝土的用水量较天然碎石混凝土仅增加了6kg/m3,其抗压强度也达到最高值,接近于天然碎石混凝土;经二次物理强化和化学浸渍复合强化处理后的再生混凝土氯离子扩散系数降低了13.6%;三种不同的强化方式处理后,再生混凝土的碳化深度和碳化速度均有所降低。 Abstract: Three kinds of different strengthening technologies of physical enhancement, chemical enhancement and physical-chemical compound enhancement to strengthen the simple crushing recycled coarse aggregate are adopted, with 100% replaced natural gravel preparation of recycled coarse aggregate concrete, and the influences of the recycled coarse aggregate of different strengthening treatment on the working performance, mechanical properties, penetration resistance and carbonation resistance of concrete are studied. The research results show that, through strengthening treatment, recycled coarse aggregate concrete properties are improved to different degrees, the water consumption of recycled coarse aggregate concrete after the secondary physical strengthen treatment is only increased by 6kg/m3 than that of natural gravel concrete. The compressive strength also reached the highest value, close to the natural gravel concrete. The chloride ion diffusion coefficient of recycled concrete after the secondary physical-chemical compound strengthening treatment is reduced by 13.6%. The depth of carbonation and carbonation velocity decrease after three kinds of different strengthening treatments.
郭远新,李秋义,孔哲,等.再生粗骨料强化处理工艺对再生混凝土性能的影响[J].混凝土与水泥制品,2015(6):11-17. GUO Y X,LI Q Y,KONG Z,et al.Influence of Strengthening Treatment Technology of Recycled Coarse Aggregate on Performance of Recycled Concrete[J].CHINA CONCRETE AND CEMENT PRODUCTS,2015(6):11-17.
无砂再生透水混凝土配合比设计
无砂再生透水混凝土配合比设计
  • 张松涛1,贾欣悦2,宋 卓1,贾艳东1
2016年第12期
摘要
引用本文
张松涛,贾欣悦,宋卓,等.无砂再生透水混凝土配合比设计[J].混凝土与水泥制品,2016(12):6-12. ZHANG S T,JIA X Y,SONG Z,et al.Design on Mix Proportion of No-fines Pervious Recycled Concrete[J].CHINA CONCRETE AND CEMENT PRODUCTS,2016(12):6-12.
清水混凝土概念、研究现状、存在问题及配合比设计方 综述
清水混凝土概念、研究现状、存在问题及配合比设计方 综述
  • 郭 伟1,路林海2,王龙志3,崔 鑫3,王桂玲4,张海霞3
2016年第10期
摘要
引用本文
摘   要:20世纪90年代后期以来,清水混凝土研究及工程应用得到了长足发展,许多城市建成了清水混凝土标志性工程。为了更好地促进清水混凝土研究的深入、工程质量的提高,对清水混凝土的概念、研究现状、存在问题及现有的清水混凝土配合比设计方法进行了系统地梳理、总结。通过对清水混凝土现状的研究,可使相关领域技术人员认识到清水混凝土发展中存在的不足、明确清水混凝土的研究方向,以实现清水混凝土技术研究水平的再提高,有力地支持清水混凝土工程应用的进一步推广。 Abstract: Since the late 1990s, research and application of fair-faced concrete has made considerable progress, many cities built landmark projects of fair-faced concrete. In order to better promote the study in-depth and the engineering quality improvement of fair-faced concrete, the concept, research status, existing problems and mixture design methods of fair-faced concrete are systematically reviewed and summarized. Through the above study of fair-faced concrete, the relevant technicians recognize the lack of fair-faced concrete in the development and realize a clear research direction, in order to improve research level, strongly support further promotion of fair-faced concrete in engineering applications.
郭伟,路林海,王龙志,等.清水混凝土概念、研究现状、存在问题及配合比设计方法综述[J].混凝土与水泥制品,2016(10):23-27. GUO W,LU L H,WANG L Z,et al.Summary for Concept, Research Status, Existing Problems and Mix Proportion Design of Fair-faced Concrete[J].CHINA CONCRETE AND CEMENT PRODUCTS,2016(10):23-27.
新型装配式建筑构件生产及其施工技术的研究与应用
新型装配式建筑构件生产及其施工技术的研究与应用
  • 范 玉1,4,徐 华2,黄 新3,黄继战4,马北京4
2015年第12期
摘要
引用本文
摘   要:通过对建筑PC构件的设计、生产、施工进行的研究,对建筑PC构件进行了再设计及优化,确定了合理的PC构件生产及其施工工艺方案,并对影响PC构件质量的相关因素进行了分析。 Abstract: Through the research on design of PC component, production and construction,  construction PC component is carried out for re-design and optimization. The reasonable PC component production and construction technology program are determined, and factors affecting the quality of PC are analyzed.
范玉,徐华,黄新,等.新型装配式建筑构件生产及其施工技术的研究与应用[J].混凝土与水泥制品,2015(12):87-89. FAN Y, XU H,HUANG X,et al.Research and Application of Production for New Type of Prefabricated Construction Component and Its Construction Technology[J].CHINA CONCRETE AND CEMENT PRODUCTS,2015(12):87-89.
石墨烯纳米片对水泥基复合材料力学性能的影响
石墨烯纳米片对水泥基复合材料力学性能的影响
  • 王 辉,刘爱红,李 航
2015年第12期
摘要
引用本文
摘   要:采用球磨法将石墨烯纳米片分散在水泥基体中,研究了石墨烯纳米片掺量对水泥基材料抗折强度和抗压强度的影响。实验结果表明,适量的石墨烯纳米片可均匀分散在水泥基体中,通过桥联效应和拔出效应对水泥基材料起增强增韧作用,当石墨烯纳米片掺量为0.04%时,石墨烯纳米片与水泥基体界面结合良好,没有明显过渡层,试件3d抗折强度和抗压强度分别提高了22.84%和23.61%。 Abstract: Graphene nanoplatelets (GNPs) were dispersed in the cement matrix by milling method. The effect of GNPs with different contents on the flexural strength and compressive strength of composites were studied. The results showed that well dispersed GNPs improved the mechanical properties of cement composites, owing to GNPs excellent pulling-out and bridging capability. When the GNPs content was 0.04%, the mechanical properties of cement composites were increased obviously. Its flexural and compressive strength increased by 22.84% and 23.61% respectively compared with the referee sample after curing 3 days. The interface between graphene nanoplatelets and cement was bonded well, with no obvious transition layer.
王辉,刘爱红,李航.石墨烯纳米片对水泥基复合材料力学性能的影响[J].混凝土与水泥制品,2015(12):25-27. WANG H,LIU A H,LI H.Influence of Graphene Nanoplatelets on Mechanical Properties of Cement-based Composites[J].CHINA CONCRETE AND CEMENT PRODUCTS,2015(12):25-27.
大型智能PC构件自动化生产线简介
大型智能PC构件自动化生产线简介
  • 孙 红1,孙 健1,吴玉厚1,赵凯军2
2015年第3期
摘要
引用本文
摘   要:根据混凝土工厂化生产的需要,阐述了大型智能PC构件生产线的组成部分、工艺过程和技术重点;分析了该生产线中蕴含的微观物流、信息采集、分布式控制及多智能体的协同过程,总结了PC构件生产线的优点和技术创新突破点,可为大型智能PC构件全自动生产线的研制提供理论基础和技术依据。 Abstract: According to the needs of the concrete factory production, the large scale intelligent automatic PC production line the technological process and technical keys of PC component are introduced, the cooperative process of microscopic logistics, information acquisition, distributed control and multi-agent systems are analyzed, the advantages and technology innovation of PC components production line are summarized, which can provide theoretical basis and technical basis for large scale intelligent automatic production line of PC components.
孙红,孙健,吴玉厚,等.大型智能PC构件自动化生产线简介[J].混凝土与水泥制品,2015(3):45-48. SUN H,SUN J,WU Y H,et al.Introduction of Large Scale Intelligent PC Automatic Production Line[J].CHINA CONCRETE AND CEMENT PRODUCTS,2015(3):45-48.
建筑垃圾再生微粉的研究现状
建筑垃圾再生微粉的研究现状
  • 毛新奇1,2,屈文俊1,朱 鹏1
2015年第8期
摘要
引用本文
摘   要:建筑垃圾再生微粉各项性能的研究是推进建筑垃圾资源化的重要基础。根据近年来国内关于再生微粉的主要研究成果,对材料来源、制备工艺、工作性能、力学性能和耐久性能等方面进行了综述,并对相关的影响因素进行了探讨分析。 Abstract: Research on the properties of utilization regeneration of powder for construction waste is the important foundation of resource utilization of construction waste. Based on the recent domestic research on recycled powder, material source, manufacturing process, workability, mechanical properties and the durability are reviewed. Besides, the related influence factors are discussed and analyzed.
毛新奇,屈文俊,朱鹏.建筑垃圾再生微粉的研究现状[J].混凝土与水泥制品,2015(8):89-93. MAO X Q,QU W J,ZHU P.Study Status of Recycled Powder for Construction Waste[J].CHINA CONCRETE AND CEMENT PRODUCTS,2015(8):89-93.
再生粗骨料及再生混凝土性能研究进展
再生粗骨料及再生混凝土性能研究进展
  • 甘 福1,周脉席1,3,濮 琦2
2018年第9期
摘要
引用本文
摘   要:结合国内外再生粗骨料混凝土的研究现状,综述了再生粗骨料性能、再生粗骨料混凝土性能、再生混凝土改性方法及改性后的混凝土性能等方面内容,展望了再生粗骨料及再生混凝土未来研究方向。 Abstract: Combining the study of recycled coarse aggregate concrete at home and abroad, the property of recycled coarse aggregate, the performance of recycled coarse aggregate concrete, the modified method of recycled concrete and the performance of modified concrete are reviewed, and the fature research direction on recycled coarse aggregate and recycled concrete is prospected.
甘福,周脉席,濮琦.再生粗骨料及再生混凝土性能研究进展[J].混凝土与水泥制品,2018(9):102-107. GAN F,ZHOU M X,PU Q.Research Progress of Performance of Recycled Coarse Aggregate and Recycled Concrete[J].CHINA CONCRETE AND CEMENT PRODUCTS,2018(9):102-107.
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